4625639 has 8 divisors (see below), whose sum is σ = 4786320. Its totient is φ = 4467456.

The previous prime is 4625617. The next prime is 4625641. The reversal of 4625639 is 9365264.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4625639 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4625599 and 4625608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4625609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3617 + ... + 4725.

It is an arithmetic number, because the mean of its divisors is an integer number (598290).

Almost surely, 2^4625639 is an apocalyptic number.

4625639 is a deficient number, since it is larger than the sum of its proper divisors (160681).

4625639 is a wasteful number, since it uses less digits than its factorization.

4625639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249.

The product of its digits is 38880, while the sum is 35.

The square root of 4625639 is about 2150.7298761118. The cubic root of 4625639 is about 166.6187653452.

The spelling of 4625639 in words is "four million, six hundred twenty-five thousand, six hundred thirty-nine".